From mboxrd@z Thu Jan 1 00:00:00 1970 From: vaibhav.hiremath@linaro.org (Vaibhav Hiremath) Date: Tue, 07 Jul 2015 12:13:00 +0530 Subject: [PATCH-RESEND 0/3] i2c: core/pxa: Add support for hardware lock In-Reply-To: <557FDE4B.3060304@linaro.org> References: <1433270731-23790-1-git-send-email-vaibhav.hiremath@linaro.org> <557FDE4B.3060304@linaro.org> Message-ID: <559B74F4.5090205@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tuesday 16 June 2015 01:58 PM, Vaibhav Hiremath wrote: > > > On Wednesday 03 June 2015 12:15 AM, Vaibhav Hiremath wrote: >> To justify the need for hardware lock, lets take a real usecase >> scenario - >> >> In case of Marvell SoC, PXA910 silicon, both AP and CP are present and >> these two ARM cores are sharing one pair of I2C pins. >> >> In order to keep I2C transaction operated with atomic, hardware lock >> (RIPC) is required. >> >> This patch extends support for atomic operation by adding hardware >> lock support >> to the i2c-core. >> >> PATCH[1/3] : Core changes for hardware lock >> PATCH[2/3 & 3/3] : hardware lock support to i2c-pxa bus driver. >> >> Link to previous post: >> http://lkml.iu.edu/hypermail/linux/kernel/1104.3/02352.html >> http://lkml.iu.edu/hypermail/linux/kernel/1104.3/02353.html >> http://lkml.iu.edu/hypermail/linux/kernel/1104.3/02354.html >> >> TODO: >> - DT node addition >> I am using PXA1928 based platform which is still not available >> in Mainline, so it is based on, below patch-series >> Link to Rob's patches: >> https://lkml.org/lkml/2015/5/1/14 >> https://lkml.org/lkml/2015/5/19/1206 >> PMIC 88pm860 support >> http://www.spinics.net/lists/arm-kernel/msg422554.html >> >> Vaibhav Hiremath (3): >> i2c: core: append hardware lock with bus lock >> i2c: pxa: Add support for hardware lock >> i2c: pxa: Add pin ctrl support for CP core access >> > > Wolfram, > > Any update on this patch-series? > Any update? Its long time since this patch is pending for review. Thanks, Vaibhav